Detection and characterisation of a 106-day transiting Jupiter: TOI-2449 b/NGTS-36 b

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Table F.1

Prior for the joint modelling of photometric and radial velocity data.

Parameters	Prior
Transiting planet
Orbital period (days)	𝒰(30,150)
Time of transit T₀ (days)	𝒰(2459153.4, 2459153.8)
Radius ratio	𝒰(0, 1)
Impact parameter	𝒰(0, 1)
$\sqrt{e} \cos (ω)$ $\sqrt e \cos \left( \omega \right)$	𝒰(−1, 1)
$\sqrt{e} \sin (ω)$ $\sqrt e \sin \left( \omega \right)$	𝒰(−1, 1)
RV semi-amplitude (km s⁻¹)	𝒰(0, 100)
Host star
Stellar density (kg.m⁻³)	𝒩(1260, 80)
Instruments
TESS limb darkening q1	𝒩(0.32, 0.04)
TESS limb darkening q2	𝒩(0.24, 0.03)
NGTS limb darkening q1	𝒩(0.37, 0.04)
NGTS limb darkening q2	𝒩(0.26, 0.03)
TESS offsets	𝒩(0, 0.01)
TESS jitters (ppm)	ℒ𝒰(0.1, 1000)
NGTS offsets	𝒩(0, 0.01)
NGTS jitters (ppm)	ℒ𝒰(0.1, 1000)
GP amplitude TESS (rel. flux)	ℒ𝒰(1e⁻⁶, 100.0)
GP time-scale TESS (days)	ℒ𝒰(0.001, 100.0)
Spectrograph offsets (km s⁻¹)	𝒰(−100, 100)
Spectrograph jitters (kms⁻¹)	ℒ𝒰(0.001, 0.2)
Stellar activity cycle
Orbital period (days)	ℒ𝒰(1, 3000)
Time of transit T₀ (days)	𝒰(2458745.0, 2459745.0)
Eccentricity	0
Argument of periastron	90
RV semi-amplitude (kms⁻¹)	𝒰(0, 100)

Notes. The normal (𝒩) distribution is defined by its mean and variance. The uniform (𝒰) and log uniform (ℒ𝒰) distributions are defined by their lower and upper bounds. The priors on the radial velocity offsets and jitters are identical for CHIRON, CORALIE, FEROS, and HARPS.

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